/* EQUI Index Page Styles */

/* =========================== */
/*      CSS VARIABLES          */
/* =========================== */

:root {
  /* Brand Colors */
  --primary-charcoal: #1a1a1a;
  --primary-green: #2d3931;
  --accent-sage: #c6decd;
  --neutral-white: #ffffff;
  --neutral-900: #1a1a1a;
  --text-dark: #2d2d2d;
  --text-inverse: var(--neutral-white);
  --primary-dark: #2d2d2d;
  
  /* Brand References */
  --brand-primary: var(--primary-green);
  --brand-secondary: var(--accent-sage);
  
  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Inria Serif', 'Times New Roman', serif;
  
  /* Shadows */
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  
  /* Easing */
  --ease-sharp: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  
  /* Spacing */
  --space-2: 0.5rem;
  --space-4: 1rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  
  /* More variables */
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;
  --leading-normal: 1.5;
  --leading-tight: 1.25;
  --neutral-600: #6b7280;
  --neutral-200: #f5f2ed;
  --radius: 0px;
}

/* =========================== */
/*        CSS RESET            */
/* =========================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  border-radius: var(--radius) !important;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-weight: var(--font-weight-normal);
  line-height: var(--leading-normal);
  color: var(--neutral-600);
  background: var(--neutral-200);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-weight-bold);
  line-height: var(--leading-tight);
  color: var(--primary-dark);
}

ul, ol {
  list-style: none;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
  height: auto;
}

/* =========================== */
/*       INDEX PAGE LAYOUT     */
/* =========================== */

/* Index Page Body */
body.index-page {
  font-family: var(--font-body);
  background: linear-gradient(135deg, var(--primary-charcoal) 0%, var(--neutral-900) 100%);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  overflow: hidden;
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
  position: relative;
  animation: backgroundFloat 20s ease-in-out infinite;
}

body.index-page::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url('../assets/img/logo/overlay_about_section_3.svg');
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
  opacity: 0.06;
  z-index: 1;
  filter: hue-rotate(60deg) brightness(1.5) contrast(1.2);
  mix-blend-mode: screen;
  pointer-events: none;
}

body.index-page::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background-image: 
      radial-gradient(2px 2px at 20px 30px, rgba(198, 222, 205, 0.3), transparent),
      radial-gradient(2px 2px at 40px 70px, rgba(198, 222, 205, 0.2), transparent),
      radial-gradient(1px 1px at 90px 40px, rgba(198, 222, 205, 0.25), transparent),
      radial-gradient(1px 1px at 130px 80px, rgba(198, 222, 205, 0.15), transparent),
      radial-gradient(2px 2px at 160px 30px, rgba(198, 222, 205, 0.2), transparent);
  background-repeat: repeat;
  background-size: 200px 100px;
  z-index: -1;
  animation: particleFloat 25s linear infinite;
  pointer-events: none;
}

body.index-page.transitioning-out {
  opacity: 0;
  transform: scale(0.98) translateY(20px);
  transition: all 0.8s cubic-bezier(0.4, 0.0, 0.2, 1);
  filter: blur(4px);
}

/* =========================== */
/*         LOGO SECTION        */
/* =========================== */

.logo-section {
  text-align: center;
  margin-bottom: 4rem;
  animation: logoEntrance 1s ease-out 0.5s both;
  position: relative;
  z-index: 10;
}

.logo-main {
  margin-bottom: 0.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.logo-main img {
  max-height: 120px;
  width: auto;
  filter: brightness(0) saturate(100%) invert(86%) sepia(18%) saturate(326%) hue-rotate(84deg) brightness(99%) contrast(91%) drop-shadow(0 0 10px rgba(198, 222, 205, 0.3));
  transition: filter 0.3s ease;
}


.logo-underline {
  width: 120px;
  height: 3px;
  background: var(--brand-secondary);
  margin: 0 auto;
}

/* =========================== */
/*         CARDS GRID          */
/* =========================== */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1200px;
  width: 100%;
  animation: cardsGridFadeIn 1.2s ease-out 1s both;
}

.auto-flip-card {
  width: 280px;
  height: 360px;
  perspective: 1000px;
  justify-self: center;
  opacity: 0;
  transform: translateY(30px);
  animation: cardSlideIn 0.8s ease-out both;
}

.auto-flip-card:nth-child(1) { animation-delay: 1.2s; }
.auto-flip-card:nth-child(2) { animation-delay: 1.4s; }
.auto-flip-card:nth-child(3) { animation-delay: 1.6s; }
.auto-flip-card:nth-child(4) { animation-delay: 1.8s; }

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  text-align: center;
  transform-style: preserve-3d;
  animation: autoFlip 12s ease-in-out infinite;
  transition: transform 0.8s var(--ease-sharp);
}

.auto-flip-card.flipped .card-inner {
  transform: rotateY(180deg);
}

/* Card Faces */
.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border: 1px solid var(--accent-sage);
  box-shadow: var(--shadow-md);
  display: grid;
  grid-template-rows: 110px 1fr;
  align-items: start;
  justify-items: center;
  padding: 1.5rem 2.2rem;
  transition: box-shadow 0.3s ease;
}

.card-front {
  z-index: 2;
  background: var(--primary-charcoal);
  color: var(--text-inverse);
  border: 1px solid var(--accent-sage);
}

.card-back {
  transform: rotateY(180deg);
  background: var(--accent-sage);
  border: 1px solid var(--primary-green);
  color: var(--primary-dark);
}

/* =========================== */
/*       CARD CONTENT          */
/* =========================== */

/* Icons */
.competency-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}

.card-front .competency-icon {
  background: var(--accent-sage);
}

.card-front .competency-icon i {
  font-size: 2rem;
  color: var(--primary-charcoal);
}

.card-back .competency-icon {
  background: var(--primary-charcoal);
}

.card-back .competency-icon i {
  font-size: 2rem;
  color: var(--accent-sage);
}

/* Content Info */
.competency-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  text-align: center;
  width: 100%;
  height: 100%;
  padding-top: 0.5rem;
}

.card-front .competency-info h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--accent-sage);
  margin-bottom: 0.75rem;
}

.card-front .competency-info p {
  font-size: 0.875rem;
  color: var(--neutral-300);
  line-height: 1.5;
}

.card-back .competency-info h3 {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-charcoal);
  margin-bottom: 0.75rem;
}

.card-back .competency-info p {
  font-size: 0.875rem;
  color: var(--primary-dark);
  line-height: 1.5;
}

/* Card Back Content */
.card-back-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  color: var(--neutral-100);
  width: 100%;
  height: 100%;
}

.back-icon {
  width: 60px;
  height: 60px;
  margin: 1rem auto 1.5rem auto;
  background: var(--primary-charcoal);
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  flex-shrink: 0;
}

.back-icon i {
  font-size: 1.5rem;
  color: var(--accent-sage);
}

.card-back-content h4 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--primary-dark);
}

.card-back-content ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.card-back-content li {
  font-size: 0.875rem;
  color: var(--primary-dark);
  margin-bottom: 0.5rem;
  padding-left: 1.5rem;
  position: relative;
  line-height: 1.4;
}

.card-back-content li:before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary-dark);
  font-weight: bold;
}

/* =========================== */
/*       MEMBER STYLES         */
/* =========================== */

.member-photo {
  width: 140px;
  height: 140px;
  margin-bottom: 1.5rem;
  overflow: hidden;
  border: 3px solid var(--neutral-300);
}

.member-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.member-info h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--brand-primary);
  margin-bottom: 0.5rem;
  line-height: 1.3;
}

.member-role {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: var(--space-1);
}

/* =========================== */
/*      INSTRUCTIONS           */
/* =========================== */

.instructions {
  margin-top: 3rem;
  text-align: center;
  animation: fadeIn 1s ease-out 2s both;
  z-index: 10;
  position: relative;
}

.instructions p {
  font-size: 1.125rem;
  color: var(--text-inverse);
  font-weight: 600;
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
  margin-bottom: 1rem;
}

.click-hint {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 2.5rem;
  background: var(--accent-sage);
  color: var(--primary-dark);
  text-decoration: none;
  border-radius: 0;
  font-weight: 600;
  font-size: 1.125rem;
  transition: all 0.3s ease;
  border: 2px solid var(--accent-sage);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.click-hint:hover {
  background: var(--text-inverse);
  color: var(--primary-dark);
  border-color: var(--text-inverse);
  box-shadow: 0 6px 20px rgba(198, 222, 205, 0.4);
  transform: translateY(-2px);
}

.click-hint i {
  font-size: 1.25rem;
  animation: arrowPulse 2s ease-in-out infinite;
}

/* =========================== */
/*     CONTENT CONTROL         */
/* =========================== */

/* Desktop/Mobile Content Control */
.mobile-text {
  display: none;
}

.desktop-text {
  display: inline;
}

.desktop-only {
  display: block;
}

/* =========================== */
/*        ANIMATIONS           */
/* =========================== */

@keyframes autoFlip {
  0%, 45% { 
      transform: rotateY(0deg);
  }
  50%, 95% { 
      transform: rotateY(180deg);
  }
  100% { 
      transform: rotateY(360deg);
  }
}

@keyframes backgroundFloat {
  0%, 100% { 
      background-position: center center;
      transform: scale(1);
  }
  25% { 
      background-position: center top;
      transform: scale(1.02);
  }
  50% { 
      background-position: center bottom;
      transform: scale(0.98);
  }
  75% { 
      background-position: center center;
      transform: scale(1.01);
  }
}

@keyframes arrowPulse {
  0%, 100% { 
    transform: scale(1) translateX(0);
    opacity: 1;
  }
  50% { 
    transform: scale(1.1) translateX(3px);
    opacity: 0.8;
  }
}

@keyframes cardsGridFadeIn {
  from { 
      opacity: 0;
      transform: translateY(20px);
  }
  to { 
      opacity: 1;
      transform: translateY(0);
  }
}

@keyframes cardSlideIn {
  from { 
      opacity: 0;
      transform: translateY(30px) scale(0.95);
  }
  to { 
      opacity: 1;
      transform: translateY(0) scale(1);
  }
}

@keyframes logoEntrance {
  from {
    opacity: 0;
    transform: translateY(-10px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes particleFloat {
  0% { 
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  100% { 
    transform: translate3d(-200px, -100px, 0) rotate(360deg);
  }
}